% chance of rain has to do with % coverage for an area.If there is a 20% chance of rain today, 60% chance tomorrow, and 20% chance of rain in two days, what is the probability it will rain over the next three days? Anyone know how to figure that out? College stats seems like 20 years ago........
If there is a 20% chance of rain today, 60% chance tomorrow, and 20% chance of rain in two days, what is the probability it will rain over the next three days? Anyone know how to figure that out? College stats seems like 20 years ago........
Dood...20+60+20=100...there's a 100% chance of rain in the next 3 days!
Google and calculators are awesome, if you know how to use them.
http://www.calctool.org/CALC/math/probability/3_events
74.4% - Frod was right
The problem with chance of rain numbers in a forecast....those usually deal with the % of your listening / viewing area getting rain. While us mathematical types think it is talking about the odds our house will get rain.
The forecast over your house could be near 100% but an hour south of you will remain dry.
Seattle "rain" isn't rain. It's like a drizzle or list misting.
Well...I live a short distance away from Seattle. We've had about 1.75" of "drizzle" in the past 24 hours...:whiste: